S_CPL_TX_QUIC_ENC_HDRLENGTH_LO
((x) << S_CPL_TX_QUIC_ENC_HDRLENGTH_LO)
(((x) >> S_CPL_TX_QUIC_ENC_HDRLENGTH_LO) & M_CPL_TX_QUIC_ENC_HDRLENGTH_LO)